26 Electrical parts are listed for the 2006 Buick Rainier, in 8 part types, covering both the 4.2L L6 and the 5.3L V8. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2006 Buick Rainier, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. 20 parts of the 26 listed are Alternator / Generator (9 parts), Automatic Headlamp Sensor (6 parts) and Battery (5 parts). The other 5 part types cover the remaining 6 parts.
The 2006 Buick Rainier was sold with both the 4.2L L6 and the 5.3L V8. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
12 brands supply electrical parts for the 2006 Buick Rainier, led by ACDELCO (3 parts), GM GENUINE (3 parts) and STANDARD MOTOR PRODUCTS (3 parts), plus 9 more brands. Quality grades include New, AGM and Remanufactured.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2006 Buick Rainier. 5 parts have it, including WAI GLOBAL 8497N (Alternator / Generator) and GM GENUINE 13498957 (Automatic Headlamp Sensor). Each part number opens a page with every vehicle that part fits.
Alternator / Generator
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAI GLOBAL Popular Fits: 4.2L L6 | 8497N | 🇺🇸 US 🇨🇦 CA | 150 Amps | View on Amazon |
| ACDELCO Fits: 4.2L L6 | 3351235 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| PURE ENERGY Fits: 4.2L L6 | 8290603N | 🇺🇸 US 🇨🇦 CA | 150 Amps | View on Amazon |
| REMY Fits: 4.2L L6 | 91617 | 🇺🇸 US 🇨🇦 CA | 150 Amps | View on Amazon |
| TERREPOWER Fits: 4.2L L6 | N8497 | 🇺🇸 US 🇨🇦 CA | 150 Amps | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PURE ENERGY Popular Fits: 4.2L L6 | 8290603 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| ACDELCO Fits: 4.2L L6 | 3342527A | 🇺🇸 US 🇨🇦 CA | GoldRemanufactured | View on Amazon |
| REMY Fits: 4.2L L6 | 22056 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER Fits: 4.2L L6 | 8497 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
This table covers the alternators that charge the battery and run the electrical load. Typical signs include dim lights at idle, a battery lamp, or a growl from the charging pulley. Load-test the battery and inspect the belt and grounds — a bad ground mimics a failed alternator.
9 Alternator / Generator parts for the 2006 Buick Rainier come from 5 brands — ACDELCO, PURE ENERGY, REMY and 2 other brands. The "Popular" part is WAI GLOBAL 8497N.
The New section lists 5 options from WAI GLOBAL, ACDELCO, PURE ENERGY and 2 other brands — brand-new units rather than rebuilt ones. WAI GLOBAL 8497N is listed in this group.
The Remanufactured section lists 4 options from PURE ENERGY, ACDELCO, REMY and 1 other brand — factory-rebuilt units with new wear components. PURE ENERGY 8290603 is listed in this group.
Listed part numbers: WAI GLOBAL 8497N, ACDELCO 3351235 and PURE ENERGY 8290603N, plus the other parts above.
Automatic Headlamp Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 4.2L L6 | 13498957 | 🇺🇸 US 🇨🇦 CA | FrontDual Zone Climate Control with Manual Controls (blue/Red dials only) | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 | EFL172 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GM GENUINE Fits: 4.2L L6 | 13498958 | 🇺🇸 US 🇨🇦 CA | Mates with Conn 13584477 with LeadsDual Solar and Twilight | View on Amazon |
| WELLS Fits: 4.2L L6 | 5S6709 | 🇺🇸 US 🇨🇦 CA | without Automatic Temperature Controlwith Stamping # 12450120 | View on Amazon |
| WELLS Fits: 4.2L L6 | 5S8095 | 🇺🇸 US 🇨🇦 CA | without Automatic Temperature Controlwith Stamping # 15837063 | View on Amazon |
| WELLS Fits: 4.2L L6 | 5S7218 | 🇺🇸 US 🇨🇦 CA | with Automatic Temperature Control (you can set a specific numeric temperature) | View on Amazon |
This table covers the Automatic Headlamp sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors.
6 Automatic Headlamp Sensor parts are listed for the 2006 Buick Rainier, from WELLS, GM GENUINE and STANDARD MOTOR PRODUCTS. GM GENUINE 13498957 carries the "Popular" badge.
Listed part numbers: GM GENUINE 13498957, STANDARD MOTOR PRODUCTS EFL172 and GM GENUINE 13498958, plus the other parts above.
Battery
AGM (Extended Life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA Popular Fits: 4.2L L6 | 9A78DT | 🇺🇸 US 🇨🇦 CA | IntimidatorAGM | View on Amazon |
| ACDELCO Fits: 4.2L L6 | 78XAGM | 🇺🇸 US 🇨🇦 CA | AGMBCI Group: 78 | View on Amazon |
| DEKA Fits: 4.2L L6 | 9A78 | 🇺🇸 US 🇨🇦 CA | IntimidatorAGM | View on Amazon |
| FVP Fits: 4.2L L6 | 78AGMG | 🇺🇸 US 🇨🇦 CA | Platinum AGMBCI Group: 78 | View on Amazon |
Performance AGM (Extended Life + Increased Power)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FULLRIVER Fits: 4.2L L6 | FT82578 | 🇺🇸 US 🇨🇦 CA | AGMBCI Group 78 | View on Amazon |
This table covers the batteries listed by group size and specification. Typical signs include slow cranking, a battery lamp, or a no-start after the vehicle sat overnight. Confirm group size and terminal layout in the notes. Clean the posts and the ground before condemning the battery.
5 Battery parts are listed for the 2006 Buick Rainier, from DEKA, ACDELCO, FVP and 1 other brand. DEKA 9A78DT carries the "Popular" badge.
The AGM (Extended Life) section lists 4 options from DEKA, ACDELCO and FVP — grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. DEKA 9A78DT is listed in this group.
The Performance AGM (Extended Life + Increased Power) section lists 1 option from FULLRIVER — grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. FULLRIVER FT82578 is listed in this group.
This group includes DEKA 9A78DT, ACDELCO 78XAGM and DEKA 9A78 and the remaining parts above.
Battery Cable
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 4.2L L6 | A354HDCL2 | 🇺🇸 US 🇨🇦 CA | NegativeBATTERY TO GROUND | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 4.2L L6 | A414DEF | 🇺🇸 US 🇨🇦 CA | PositiveBATTERY TO SWITCH | View on Amazon |
This table covers the positive and ground cables that run from the battery. Typical signs include a stretched or frayed cable, or a control that no longer reaches the end of its travel. Route the new cable through the same clips. A kinked cable binds and fails early.
2 Battery Cable parts for the 2006 Buick Rainier come from STANDARD MOTOR PRODUCTS.
This group includes STANDARD MOTOR PRODUCTS A354HDCL2 and STANDARD MOTOR PRODUCTS A414DEF.
Battery Hold Down
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 4.2L L6 | 390030 | 🇺🇸 US 🇨🇦 CA | Battery Hold-Down | View on Amazon |
This table covers the clamps and brackets that secure the battery.
This group shows a single part: DORMAN 390030.
Battery Terminal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA Fits: 4.2L L6 | 00351 | 🇺🇸 US 🇨🇦 CA | Universal Terminal for side terminal batteries | View on Amazon |
This table covers the terminals and clamps that connect cables to the battery posts.
One part is listed for the 2006 Buick Rainier — DEKA 00351.
Battery Terminal Protector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 4.2L L6 | 19119011 | 🇺🇸 US 🇨🇦 CA | Red | View on Amazon |
This table covers the covers that protect battery terminals.
One part is listed for the 2006 Buick Rainier — GM GENUINE 19119011.
Battery Tray
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 4.2L L6 | 00595 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the trays the battery sits in.
One part is listed for the 2006 Buick Rainier — DORMAN 00595.
Buying Electrical Parts for a 2006 Buick Rainier
On this vehicle, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors.
- Match the engine first. Every electrical part here is engine-specific; each row shows which engine(s) it fits.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, clean or renew the battery terminals and grounds with any charging-system repair.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Alternator / Generator and Automatic Headlamp Sensor .
Frequently Asked Questions
How many electrical parts fit the 2006 Buick Rainier?
Our catalog currently lists 26 electrical parts for the 2006 Buick Rainier across 8 subcategories and 12 brands, covering both the 4.2L L6 and the 5.3L V8. Each part is matched to the engine(s) it fits.
Do electrical parts differ between 2006 Buick Rainier engines?
Yes. Every electrical part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of electrical problems on a 2006 Buick Rainier?
Common symptoms include slow cranking on cold mornings, a battery light that flickers, dim lights at idle, or a check-engine code pointing at a sensor circuit. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, clean or renew the battery terminals and grounds with any charging-system repair.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2006 Buick Rainier was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2006 Buick Rainier?
First match the engine — each row shows which engine(s) the part fits. Then test before replacing — a failed alternator and a bad ground can look identical, and sensors are frequently condemned for wiring faults. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2006 Buick Rainier
Electrical Parts for Other Buick Rainier Years
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